would I automatically be granted the Class 2 in the same process
The simple short answer to that particular question is probably "yes".
Having said that, and subject to the caveats already referred to above, my gut feeling is that further tests, investigations or enquiries might be suggested in order that the Class 1 (which was what you were originally after ! ) might still be possible to grant.
It's clear from a lot of what one reads on this forum that many still regard the CAA Medical Department as an aggressive, hateful and prescriptive organisation, whose sole aim is to "catch out" as many people with medical anomalies as possible, and GROUND them, forthwith and permanently.
Actually, nothing could be further from the truth. The overall aim in the hallowed portals of "The Belgrano" is to keep as many aviators aviating as possible - always subject, of course, to an acceptable level of risk, not only to the individual concerned, but to others as well.
Hopefully, you'll pass with flying colours, and this whole discussion will turn out to be academic ! ! Good luck ! !